The utility model provides a high-strength nut, which belongs to the mechanical technical field. The utility model solves the problem of poor reliability of the existing nut. The high strength nut includes a main nut and a pair of nuts arranged on the main nut. The main nut includes a reinforcing part and a pre-tightening part connected together and the outer diameter of the reinforcing part is smaller than the outer diameter of the pre-tightening part. The outer wall of the reinforcing part is provided with an outer thread which can be tightly connected with the auxiliary nut. Six even protrusions are formed on the outer surface of the reinforcing part. Distributive protrusion consists of an arc-shaped transition surface connected with the outer wall of the reinforcing part, an inclined supporting surface connected with the inner wall of the reinforcing part and a connecting surface connected with the supporting surface and the transition surface. There are corrugated teeth on the outer wall of the pre-tightening part, and a number of uniformly distributed reinforcing bars between the corrugated teeth and the pre-tightening part. Each reinforcing rib is embedded between corrugated teeth and pre-tightening part, and a heat dissipation hole is arranged vertically through the pre-tightening part on the reinforcing rib. The utility model has the advantages of simple structure and high intensity.
【技术实现步骤摘要】
高强度螺母
本技术属于机械
,具体涉及一种高强度螺母。
技术介绍
在常规的螺纹联接中,螺母与螺栓之间通过螺纹牙传递拧紧力,实现工件的压紧。在实际的联接过程中,螺纹牙齿由于受力会产生弹性变形,使螺距发生变化,导致实际承受载荷的螺纹牙仅限于底部的3-5个齿,其余牙齿不承受或承受很小的载荷,故使用时承载能力低,且在承受冲击载荷时螺母易松动,大大限制了螺纹联接的强度和可靠性。
技术实现思路
本技术的目的是针对现有的技术存在上述问题,提出了一种结构简单、高强度的螺母。本技术的目的可通过下列技术方案来实现:一种高强度螺母,其特征在于,包括主螺母和套设于主螺母上的副螺母,主螺母包括连为一体的加强部和预紧部且加强部外径小于预紧部外径,在加强部外壁设有外螺纹且外螺纹与副螺母可拧紧连接,在加强部外端面上向外突起形成有六个均匀分布的凸起,凸起由与加强部外壁相连且呈圆弧状的过渡面、与加强部内壁相连且倾斜设置的支撑面及连接于支撑面和过渡面之间的连接面组成,在预紧部外壁上具有波纹齿,波纹齿与预紧部之间设有若干均匀分布的加强筋且各加强筋均嵌入波纹齿与预紧部之间,在加强筋上开设有竖直贯穿预紧部的散热孔。与现有技术相比,本技术具有以下优点:1、通过主螺母加强部的拉伸弹性变形人为调整螺纹的螺距,补偿主螺母内螺纹牙齿受载产生的弹性变形,进而增多参与承载的联接螺纹的齿数,提高联接的强度,解决了螺纹联接强度低和可靠性差的问题。2、预紧部外壁上设有波纹齿,波纹齿与预紧部之间为一体连接结构,波纹齿呈波浪状凸出于预紧部外壁上,波纹齿与预紧部之间还设有加强筋,加强筋嵌入波纹齿与预紧部之间,加强筋上还开设 ...
【技术保护点】
1.一种高强度螺母,其特征在于,包括主螺母和套设于主螺母上的副螺母,主螺母包括连为一体的加强部和预紧部且加强部外径小于预紧部外径,在加强部外壁设有外螺纹且外螺纹与副螺母可拧紧连接,在加强部外端面上向外突起形成有六个均匀分布的凸起,凸起由与加强部外壁相连且呈圆弧状的过渡面、与加强部内壁相连且倾斜设置的支撑面及连接于支撑面和过渡面之间的连接面组成,在预紧部外壁上具有波纹齿,波纹齿与预紧部之间设有若干均匀分布的加强筋且各加强筋均嵌入波纹齿与预紧部之间,在加强筋上开设有竖直贯穿预紧部的散热孔。
【技术特征摘要】
1.一种高强度螺母,其特征在于,包括主螺母和套设于主螺母上的副螺母,主螺母包括连为一体的加强部和预紧部且加强部外径小于预紧部外径,在加强部外壁设有外螺纹且外螺纹与副螺母可拧紧连接,在加强部外端面上向外突起形成有六个均匀分布的凸起,凸起由与加强部...
【专利技术属性】
技术研发人员:张书麟,
申请(专利权)人:宁波俋金机械有限公司,
类型:新型
国别省市:浙江,33
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